Sheet metal lay-out device



March 24, 1953 c. K. RAUSER 2,632,250

SHEET METAL LAY-OUT DEVICE Filed Jan. 12, 1949 2 SHEETS-SHEET 1 FIG. 4. F163.

CHARLES x muss/e.

March 24, 1953 c. K. RAUSER 2,632,250

SHEET METAL LAY-OUT DEVICE Filed Jan. 12, 1949 2 SHEETS-SHEET 2 arm/71.53 x. RAUSER.

Patented Mar. 24, 1953 UNITED STATES PATENT OFFICE 1 Claim.

This invention refers to sheet metal pattern making and more particularly to an instrument or implement for laying out the templets from which the sheet metal or other rigid material is out.

It is customary to cut sheet material for the assembling of ducts, stove pipes, transformations, canopies, mouldings, fittings, pots, pans and other utensils, from paper templets that have been drawn out and cut, on a drawing board for the purpose. The drawing or template paper is used because it is easier to handle, can be marked up more easily than the actual material to be cut and assembled, and with paper on the drawing board instruments can be employed. Theoretically the use of templets is unnecessary, because the contours could be laid out directly on the sheet material. From a practical point of view, however it is desirable to use the templets, especially where it is desired to produce a great number of articles from the same template. The use of drawing instruments limits the placing of lines on the paper to conventional methods, which require continuous manipulation of the hands of the draftsman, mental concentration and every measurement and adjustment made and drawn in single lines with the instruments directly on the paper. This invention employs an implement rather than drawing instruments, triangles, etc., since no lines are drawn with it but instead locations are marked out by a series of mechanical dents or prickings on the templet. This means that the tool could be used directly on the work if necessary, to an extent not feasible through the use of drawing instruments. The implement is set by adjusting its scribers to certain dimensions predetermined for the work in question, and these dimensions extend in several different directions so that several bordering limitations, edges, sides or contours can be indicated simultaneously. Then the whole implement is placed on the work or templet and manipulated as a unit to layout all edge lines or sides of the complete contour at a time, in a quasi-automatic manner.

It is an object of this invention to provide a new and improved sheet material templet layout implement that will avoid one or more of the disadvantages and limitations of the prior art.

Another object of the invention is to provide a new and improved sheet material lay-out implement that can be used for laying out the contours of a piece of work to be cut and and assembled, directly on the templet or the sheet itself without the use of drawing instruments.

A further object of the invention is to provide a new and improved templet lay-out implement for sheet material, that can lay out a series of contours in diiierent portions of the material simultaneously to outline different edges of the contour to fit individually difierent objects or requirements.

An additional object of this invention is to provide a new and improved templet lay out implement adjustable in variable ways to provide an unlimited number of contours for ducts, fittings and other objects formed from sheet material.

An addition-a1 object of this invention is to provide a new and improved templet lay out implement that can be varied in form and adjustment to produce square or rectangular forms at one end and circular forms at the other end, off or on their longitudinal axis, and the faces parallel or at an angle to each other.

Other objects will become apparent as the invention is further described.

For a clearer understanding of the invention, its objects and the principles thereof reference is made to the appended drawings. These drawings indicate a particular form of the invention to show by way of example how the invention can be formed and constructed. The following description in conjunction with the drawings detail the features of the structure and explain its operation, while the claim emphasizes the scope of the invention.

Referring to the drawings:

Figure 1 is a side elevation of a templet layout implement embodying this invention;

Figure 2 is a plan of Figure 1;

Figure 3 is an end view showing the rectangular lay-out portion;

Figure 4 is an end view of cylindrical end lay-out portions;

Figure 5 is a view in perspective showing the fitting formed from template shown in Figure 6.

Figure 6 is a diagrammatic view of a templet lay-out for producing the sheet metal fitting shown in Figure 5 made by this embodiment, and

Figure 7 is another diagrammatic view of a templet lay-out of a conical member made by this embodiment.

Throughout the drawings, the same reference characters indicate the same parts.

In the particular construction of the lay-out implement presented in the drawings, a holder bar It forms the main base and support. It has a longitudinal rectangular guide slot ll extending through the bar for the greater part of its length. In this slot II are positioned as many bolt-studs I2, as are individually necessary for each element used in the direct layout of the contour of the templet to be made. The threaded portion I3 of each bolt-stud I2 is screwed into an element to be moved on the upper surface of the holder bar Ill, its head I4 being in contact with the lower surface of the bar. The adjustment of the bolt I2 tightens or loosens the element which is connected with its respective bolt-stud. Each element preferably consists of a saddle I5 of rectangular form with a relatively thin slot Iii longitudinally arranged in it. In this slot I6 is positioned the fin ll of the measuring pedestal I8 used with it. The pedestal I8 preferably consists of a flat plate on which are provided measuring scribers to be further detailed. The pedestals I8 are clamped in an adjustable manner to the fin I 'I positioned in the slots I6 and may be adjusted transversely, longitudinally and laterally with respect to the bar ID to suit any special requirements. There are several types of pedestals, varying in details to suit the type of adjustments to be made through each. Thus one of the pedestals known as the arcuate type I8 has its upper portion cut to a circular contour and surmounted by a semicircular rim plate holder IQ slotted radially through its'transverse section to provide sleeves 24 into which are tapped bolts 2i for holding the adjustable markers or scribers 20 placed therein. These markers 23 are preferably made from flat material and have pointed ends 22 that dig into the sheet of paper or other material 36 on which the templet contour is laid out. These markers 29 project out radially from the edge :36 of the holder I9 in conformity with the graduations 15 shown on the faces of the markers 20, and are held by the bolts 2i at the proper length to suit the markings i? to be made on the templet sheet 34. This pedestal i8 is employed to mark ofi circular contours such as circular, cylindrical pipes, and the like. The pedestal I8 is made vertically adjustable by means of its tightening screws G8 which slide in elongated slots 25 extending vertically in the fin I7 to increase or decrease the radius of the device to suit the diameter of the cylinder or round end to be produced by the device. The markers 20 in the holder I9 can therefore be adjusted vertically, laterally and radially. Another pedestal, of rectangular form, has a holder 2? also rectangular, with elongated slots 28 to receive bolts 28 attached to a fin i9 so they can be adjusted vertically in relation to each other. The holder 27 is provided with several sleeves 3! formed at its upper edges for holding markers 30 in horizontal directions and held by screws 55 according to the position of the element shown in the drawings. The markers 3t it will be noted have their pointed ends projecting upwards so that marking ends 5&3 will be aligned with the top edge 42 of the holder 2?. The markers 38 are provided with graduations ll to assist in their proper positioning. The fin A9 is provided at its lower end with a plurality of sleeves 52 having bolts 53 for holding markers Alli therein. The markers 40 are provided with graduations, to assist in their proper positioning of the sleeves. The saddles I5 are provided with thumb screws 56 for holding the fins IT and 49 therein, in various settings on center and ofi center to allow off center fittings to be produced. As many other pedestals, holders and markers can be added to the implement and adjustably ten degree angle.

mounted on the holding bar I0, as is necessary or desirable. The two pedestals indicated are submitted for use in simplerforms of templets and are set in the saddles centrally so the cylindrical and rectangular forms are positioned on the longitudinal center line of the fitting, If the finished fitting required the cylindrical portion to be on the center line and the rectangular portion to be two inches off-center, the zero graduation 59 on the fin i1 is aligned with the zero or center line 58 in saddle I5, and the graduation 57 is set at two inches olT-center, when compared with the zero line 58 on its respective saddle I5, and the differences in the positioning of the centers in both fittings as desired. The two forms indicated are submitted for use in simpler form of templets, but using the same principles and the general method of their operation, other types can be provided in a manner that can be appreciated by those skilled in the art of making sheet metal fittings. It is also to be noted that the saddles i5 can be rotated on the axis of their bolt studs i2 through a complete circle of three hundred and sixt degrees and thereby place the markers in other planes than those shown in the drawings. This feature is used in the following manner: suppose the rectangular face is to be at right angles with the longitudinal center line and the edge of the cylindrical portion is to be cut-oil at a The markers 39 and 3!} are set to suit the desired rectangular portion to be produced, with the zero line 58 on the saddle I5 is aligned with the zero line graduation 59. The markers 29 are set to produce the diameter cylinder desired, the lines 58 and 59 are aligned, the saddle l5 holding the pedestal I8 is moved along the holding bar in to the height desired for the fitting as noted on the graduations at on the holding bar Ill, the saddle IE is swung around until the protractor 32, integral therewith and forming an extension thereof, shows ten degrees, and the template is produced in the same manner as is used in producing a regular sheet metal template described above. The protractors 32 are arranged on the saddles to facilitate the angular setting of the saddle. Various markings 33 are indicated on the face of the holding bar, saddles, markers and holders to serve as measurements in adjusting them. Should it be desired to produce a conical fitting twelve inches high, with the cylindrical portion five inches in diameter, the markers 2t are set to produce the five inch diameter, the saddle I5 is positioned at right angles to the longitudinal axis of the holding bar Iii, a center scriber 35 is positioned in the slot I I twelve inches from the markers 21 and the markers 29 are rolled over the templet sheet and the scriber 35 holds its point on the template which will form the apex of the cone when formed.

In order to show the manner in which this implement is operated in addition to the description above given, it is assumed for purposes of explanation, that a blank of paper 3 is to be used as ateinplet and the implement used on it. This blank 34 is laid on a flat surface like a table. The operator then adjusts'the markers in each of the holders and saddles until they project to the distances selected for each portion of the utensil to be made. For example, it is assumed that a rectangular to circular transformation fitting is to be made, similar to that shown in Figure 5. The markers 20 are extended equally from their holder I9 until their pointed ends 22 are aligned on an arcuate line equivalent to the radius of the cylindrical pipe to be templeted. At the same time a second pedestal and saddle is adjusted along the slot ll until its holder 21' and markers 30 and 40 are properly positioned with respect to the first mentioned pedestal, in spacing and angle. The markers 30 and 40 are adjusted to provide the dimensions for the rectangular portion of the transformation, that is for the sides A and B. The pointed ends 22 of the markers 20 mark off the length and position of the side 0 on the paper, and when they have accomplished this, the continued rolling of the implement on the paper will cause contact to be made by the ends 50 and 60 to mark off the side B. When this half of the templet is formed, the implement is started over again from the points last reached on the paper and repeated. This produces the complete templet. The templet is placed on the sheet material to be cut into the transformation and the markings retraced on it. The material is out along the dotted imprints made in the material from the imprints in the templet, and the resulting outline used for the utensil. The utensil or fitting is bent along lines naturally formed as the edges of the cutout are brought together. The result is a fitting like that illustrated in Figure 5.

If a conical templet is to be made, a point is selected on the paper, and the implement rolled so that its central scriber or marker 35 is set stationary on it as a center as indicated in Figure 8.

While the implement refers to the layout of the templet, it is not intended to limit the term to use for the common templet but to include in its meaning the outline of the part to be cut out whether such be on a templet or the article material to be eventually cut, since the device can be used either way. Also the term holding bar is intended to be comprehensive enough to include any base or structure on which the saddles and other parts are mounted and operated. The markers likewise can include scribers for making visual indications on the work being laid out.

The markings 33 may be inches, or other system of measurements to suit. It may also be mentioned that the implement is normally operated by the user holding on the handle portion of the holding bar It] with one hand, while the other hand holds on to a saddle or other convenient parts to give the device the necessary movement to bring its markers across the templet in proper sequence and position.

While but one general form of the invention is shown in the drawings and described in the specifications, it is not desired to limit this application for patent to this particular form, as it is appreciated that other forms of construction could be made that would use the same principles and come within the scope of the appended claim.

Having thus described the invention, what is claimed is:

An implement for laying out templets for sheet material, comprising a holder bar having an internal longitudinal slot therethrough, a saddle adjustably mounted in said slot, a protractor integral with said saddle, a. fin carried by said saddle and extending upwardly therefrom and having vertical slots therethrough, an arcuate pedestal adjustably clamped in said slots, and means for adjustably securing a plurality of radially extending pointed markers on said pedestal to give a point by point predetermined contour on a surface when the holder bar is moved thereon.

CHARLES K. RAUSER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 878,293 Kadan Feb. 4, 1908 931,257 Blechschmidt Aug. 1'7, 1909 984,347 Cardell Feb. 14, 1911 1,015,423 Car-dell Jan. 23, 1912 1,482,186 Fales Jan. 29, 1924 2,541,808 Cahill et al Feb. 13, 1951 

